China. (Austrian Post Office in China). 1916. 'Feldpost Korrespondandenzkarta" dated '29th Dec 16' addressed to Germany cancelled by 'K.u.K. Feldpost/ No 88' dated '31st Dec 16' with hand-stamp 'K.u.K. China-Gebirgskanonenbatterie N/ 3 G.N.' in blue/ green on face.